You need an hyperbole to make a point. I did not say that, I say it IS necessary here because on other body the experience is very different. Not just a little. The lens simply behaves differently on a GH2 body (for instance) when it comes to the IQ "problems" he notes AND the AF speed. It is quite dramatic in my opinion....

The problem is that one cannot know a priori whether a disclaimer is necessary. From your perspective with your knowledge, it might have seemed obvious that a disclaimer would have been necessary but you cannot blame Ming for not having that knowledge and thus not knowing that a disclaimer was necessary.